Epson matrix printer emulator under windows. With DOSPrinter you can print to a GUI printer from your DOS application. The MSDOS API is an API which originated with 86DOS and is used in MSDOSPC DOS and other DOScompatible operating systems. Most calls to the DOS API are invoked. Create Ms Dos Program' title='Create Ms Dos Program' />MS DOS API Wikipedia. The MS DOS API is an API which originated with 8. DOS and is used in MS DOSPC DOS and other DOS compatible operating systems. Most calls to the DOS API are invoked using software interrupt 2. INT 2. 1h. By calling INT 2. AH processor register and other parameters in other registers, one invokes various DOS services. DOS services include keyboard input, video output, disk file access, executing programs, memory allocation, and various other things. All logos, trademarks, and comments on this site are property of their respective owner. All other content is 2017 by Jared Breland, and licensed under the Creative. In the late 1. 98. DOS extenders along with the DOS Protected Mode Interface DPMI allow the programs to run in either 1. DOS API. History of the DOS APIeditThe original DOS API in 8. DOS and MS DOS 1. CPM. Files were accessed using file control blocks FCBs. The DOS API was greatly extended in MS DOS 2. Unix concepts, including file access using file handles, hierarchical directories and device IO control. In DOS 3. In MS DOS 3. INT 2. MB. MS DOS 5 added support for using upper memory blocks UMBs. After MS DOS 5, the DOS API was unchanged for the successive standalone releases of DOS. The DOS API and WindowseditIn Windows 9x, DOS was generally used as a bootloader which loaded the protected mode operating system and graphical shell. DOS was usually accessed from a virtual DOS machine VDM but it was also possible to boot directly to real mode MS DOS 7. Windows. The DOS API was extended with enhanced internationalization support and long filename support, though the long filename support was only available in a VDM. With Windows 9. 5 OSR2, DOS was updated to 7. FAT3. 2 support, and functions were added to the DOS API to support this. Windows 9. 8 and Windows ME also implement the MS DOS 7. API, though Windows ME reports itself as MS DOS 8. Windows NT and the systems based on it e. Windows XP and Windows Vista are not based on MS DOS, but use a virtual machine, NTVDM, to handle the DOS API. NTVDM works by running a DOS program in virtual 8. NTVDM supports the DOS 5. API. DOSEMU for Linux uses a similar approach. Interrupt vectors used by DOSeditInterrupt vector. Description. Version. Ps Vita Games Direct No Survey here. Notes. 20h. Terminate program. Implemented in DOS kernel. Main DOS API1. 0Implemented in DOS kernel. Program terminate address. Return address in calling program. Control C handler address. Default handler is in the command shell usually COMMAND. COM2. 4h. Critical error handler address. Default handler is in the command shell usually COMMAND. COM2. 5h. Absolute disk read. Implemented in DOS kernel, enhanced in DOS 3. GB partitions. 26h. Absolute disk write. Implemented in DOS kernel, enhanced in DOS 3. GB partitions. 27h. Terminate and stay resident. Implemented in COMMAND. COM in DOS 1. 0, DOS kernel in DOS 2. Idle callout. 2. 0Called by DOS kernel when waiting for input. Fast console output. Implemented by the builtin console device driver or a replacement driver like ANSI. SYS2. Ah. Networking and critical section. Called by DOS kernel to interface with networking software. Bh. Unused. 2Ch. Unused. Dh. Unused. 2Eh. Reload transient. Implemented in COMMAND. COM2. Fh. Multiplex. Implemented in DOS kernel and various programs PRINT, MSCDEX, DOSKEY, APPEND, etc. DOS INT 2. 1h serviceseditAHDescription. Version. 00h. Program terminate. Character input. 1. Character output. Auxiliary input. 1. Auxiliary output. Printer output. 1. Direct console IO1. Direct console input without echo. Console input without echo. Display string. 1. Ah. Buffered keyboard input. Bh. Get input status. Ch. Flush input buffer and input. Dh. Disk reset. 1. Eh. Set default drive. Fh. Open file. 1. Close file. 1. 01. Find first file. 1. Find next file. 1. Delete file. 1. 01. Sequential read. 1. Sequential write. Create or truncate file. Rename file. 1. 01. Reserved. 1. 01. Get default drive. Ah. Set disk transfer address. Bh. Get allocation info for default drive. Ch. Get allocation info for specified drive. Dh. Reserved. 1. 01. Eh. Reserved. 1. 01. Fh. Get disk parameter block for default drive. Reserved. 1. 02. Random read. Random write. 1. 02. Get file size in records. Set random record number. Set interrupt vector. Create PSP1. 02. Random block read. Random block write. Parse filename. 1. Ah. Get date. 1. 02. Bh. Set date. 1. 02. Ch. Get time. 1. 02. Dh. Set time. 1. 02. Eh. Set verify flag. Fh. Get disk transfer address. Get DOS version. 2. Terminate and stay resident. Get disk parameter block for specified drive. Get or set Ctrl Break. Get In. DOS flag pointer. Get interrupt vector. Get free disk space. Get or set switch character. Get or set country info. Create subdirectory. Ah. Remove subdirectory. Bh. Change current directory. Ch. Create or truncate file. Dh. Open file. 2. Eh. Close file. 2. Fh. Read file or device. Write file or device. Delete file. 2. 04. Move file pointer. Get or set file attributes. IO control for devices. Duplicate handle. Redirect handle. 2. Get current directory. Allocate memory. 2. Release memory. 2. Ah. Reallocate memory. Bh. Execute program. Ch. Terminate with return code. Dh. Get program return code. Eh. Find first file. Fh. Find next file. Set current PSP2. Get current PSP2. Get DOS internal pointers SYSVARS2. Create disk parameter block. Get verify flag. 2. Create program PSP2. Rename file. 2. 05. Get or set file date and time. Get or set allocation strategy. Get extended error info. Ah. Create unique file. Bh. Create new file. Ch. Lock or unlock file. Dh. File sharing functions. Eh. Network functions. Fh. Network redirection functions. Qualify filename. Reserved. 3. 06. Get current PSP3. Get DBCS lead byte table pointer. Set wait for external event flag. Get extended country info. Get or set code page. Set handle count. Commit file. 3. 36. Get or set media id. Ah. Commit file. 4. Bh. Reserved. 4. 06. Ch. Extended opencreate file. Operating systems with support for the MS DOS APIeditPrograms with support for the MS DOS APIeditSee alsoeditReferenceseditRay Duncan 1. Advanced MS DOS Programming The Microsoft Guide for Assembly Language and C Programmers. Microsoft Press. ISBN 0. The x. 86 Interrupt List a. RBIL, Ralf Browns Interrupt Listctyme. INT Calls by functionwustl. Description of MS DOS services. Microsoft MS DOS Programmers Reference The Official Technical Reference to MS DOS, Microsoft Press, 1. ISBN 1. 55. 61. 55. The MS DOS Encyclopedia, Microsoft Press, 1. ISBN 1. 55. 61. 51. Ray Duncan 1. 98. Advanced MS DOS Programming The Microsoft Guide for Assembly Language and C Programmers. Microsoft Press. ISBN 0. The Programmers PC Sourcebook by Thom Hogan, Microsoft Press, 1. ISBN 1. 55. 61. 53. XThe New Peter Norton Programmers Guide to the IBM PC PS2 by Peter Norton and Richard Wilton, Microsoft Press, 1. ISBN 1 5. 56. 15 1. IBM PC DOS 7 Technical Update. Caldera, Inc. 1. Open. DOS Developers Reference Series Open. Private Garden Pc Game. DOS Programmers Guide System and Programmers Guide. Printed in the UK, August 1. Caldera Part No. 2.